North Carolina · zones 7a–8b
When to plant sweet corn in North Carolina.
Sow between Apr 10 to Jul 10 in a typical year, keyed to North Carolina's median last frost around Apr 3. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Sweet Corn dates for a typical North Carolina season.
Direct sow
Apr 10 to Jul 10
Keyed to the ~Apr 3 last frost. Sow 1.5" deep, 12" apart.
Harvest
~75 days later
~1 lb per plant over ~1 weeks.
North Carolina spans more than one climate: Zone 8 is the most common zone, but the state runs 7a to 8b. That's why the planner works from your ZIP code's frost dates, not your zone — mountain and coastal gardens in the same state can be three weeks apart.